#include <linux/module.h>
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/acpi.h>
#include <linux/signal.h>
#include <linux/kthread.h>
+#include <linux/dmi.h>
#include <acpi/acpi_drivers.h>
#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
+static const char *dummy_hid = "device";
+
static LIST_HEAD(acpi_device_list);
static LIST_HEAD(acpi_bus_id_list);
DEFINE_MUTEX(acpi_device_lock);
{
int len;
int count;
+ struct acpi_hardware_id *id;
- if (!acpi_dev->flags.hardware_id && !acpi_dev->flags.compatible_ids)
- return -ENODEV;
+ if (list_empty(&acpi_dev->pnp.ids))
+ return 0;
len = snprintf(modalias, size, "acpi:");
size -= len;
- if (acpi_dev->flags.hardware_id) {
- count = snprintf(&modalias[len], size, "%s:",
- acpi_dev->pnp.hardware_id);
+ list_for_each_entry(id, &acpi_dev->pnp.ids, list) {
+ count = snprintf(&modalias[len], size, "%s:", id->id);
if (count < 0 || count >= size)
return -EINVAL;
len += count;
size -= count;
}
- if (acpi_dev->flags.compatible_ids) {
- struct acpica_device_id_list *cid_list;
- int i;
-
- cid_list = acpi_dev->pnp.cid_list;
- for (i = 0; i < cid_list->count; i++) {
- count = snprintf(&modalias[len], size, "%s:",
- cid_list->ids[i].string);
- if (count < 0 || count >= size) {
- printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size",
- acpi_dev->pnp.device_name, i);
- break;
- }
- len += count;
- size -= count;
- }
- }
-
modalias[len] = '\0';
return len;
}
}
static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
+#ifdef CONFIG_PCI_GUESTDEV
+static ssize_t
+acpi_device_uid_show(struct device *dev, struct device_attribute *attr, char *buf) {
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+
+ return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id);
+}
+static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL);
+#endif
+
static ssize_t
acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
struct acpi_device *acpi_dev = to_acpi_device(dev);
goto end;
}
- if (dev->flags.hardware_id) {
+ if (!list_empty(&dev->pnp.ids)) {
result = device_create_file(&dev->dev, &dev_attr_hid);
if (result)
goto end;
- }
- if (dev->flags.hardware_id || dev->flags.compatible_ids) {
result = device_create_file(&dev->dev, &dev_attr_modalias);
if (result)
goto end;
}
+#ifdef CONFIG_PCI_GUESTDEV
+ if(dev->pnp.unique_id) {
+ result = device_create_file(&dev->dev, &dev_attr_uid);
+ if(result)
+ goto end;
+ }
+#endif
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
if (ACPI_SUCCESS(status))
device_remove_file(&dev->dev, &dev_attr_eject);
- if (dev->flags.hardware_id || dev->flags.compatible_ids)
- device_remove_file(&dev->dev, &dev_attr_modalias);
-
- if (dev->flags.hardware_id)
- device_remove_file(&dev->dev, &dev_attr_hid);
+ device_remove_file(&dev->dev, &dev_attr_modalias);
+ device_remove_file(&dev->dev, &dev_attr_hid);
if (dev->handle)
device_remove_file(&dev->dev, &dev_attr_path);
}
const struct acpi_device_id *ids)
{
const struct acpi_device_id *id;
+ struct acpi_hardware_id *hwid;
/*
* If the device is not present, it is unnecessary to load device
if (!device->status.present)
return -ENODEV;
- if (device->flags.hardware_id) {
- for (id = ids; id->id[0]; id++) {
- if (!strcmp((char*)id->id, device->pnp.hardware_id))
+ for (id = ids; id->id[0]; id++)
+ list_for_each_entry(hwid, &device->pnp.ids, list)
+ if (!strcmp((char *) id->id, hwid->id))
return 0;
- }
- }
-
- if (device->flags.compatible_ids) {
- struct acpica_device_id_list *cid_list = device->pnp.cid_list;
- int i;
-
- for (id = ids; id->id[0]; id++) {
- /* compare multiple _CID entries against driver ids */
- for (i = 0; i < cid_list->count; i++) {
- if (!strcmp((char*)id->id,
- cid_list->ids[i].string))
- return 0;
- }
- }
- }
return -ENOENT;
}
EXPORT_SYMBOL(acpi_match_device_ids);
+static void acpi_free_ids(struct acpi_device *device)
+{
+ struct acpi_hardware_id *id, *tmp;
+
+ list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) {
+ kfree(id->id);
+ kfree(id);
+ }
+#ifdef CONFIG_PCI_GUESTDEV
+ kfree(device->pnp.unique_id);
+#endif
+}
+
static void acpi_device_release(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
- kfree(acpi_dev->pnp.cid_list);
- if (acpi_dev->flags.hardware_id)
- kfree(acpi_dev->pnp.hardware_id);
- if (acpi_dev->flags.unique_id)
- kfree(acpi_dev->pnp.unique_id);
+ acpi_free_ids(acpi_dev);
kfree(acpi_dev);
}
struct acpi_device *acpi_dev = to_acpi_device(dev);
int len;
+ if (list_empty(&acpi_dev->pnp.ids))
+ return 0;
+
if (add_uevent_var(env, "MODALIAS="))
return -ENOMEM;
len = create_modalias(acpi_dev, &env->buf[env->buflen - 1],
* If failed, create one and link it into acpi_bus_id_list
*/
list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) {
- if (!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id ? acpi_device_hid(device) : "device")) {
- acpi_device_bus_id->instance_no ++;
+ if (!strcmp(acpi_device_bus_id->bus_id,
+ acpi_device_hid(device))) {
+ acpi_device_bus_id->instance_no++;
found = 1;
kfree(new_bus_id);
break;
}
if (!found) {
acpi_device_bus_id = new_bus_id;
- strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? acpi_device_hid(device) : "device");
+ strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device));
acpi_device_bus_id->instance_no = 0;
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
}
static acpi_status
-acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
- union acpi_object *package)
+acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
+ struct acpi_device_wakeup *wakeup)
{
- int i = 0;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *package = NULL;
union acpi_object *element = NULL;
+ acpi_status status;
+ int i = 0;
- if (!device || !package || (package->package.count < 2))
+ if (!wakeup)
return AE_BAD_PARAMETER;
+ /* _PRW */
+ status = acpi_evaluate_object(handle, "_PRW", NULL, &buffer);
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
+ return status;
+ }
+
+ package = (union acpi_object *)buffer.pointer;
+
+ if (!package || (package->package.count < 2)) {
+ status = AE_BAD_DATA;
+ goto out;
+ }
+
element = &(package->package.elements[0]);
- if (!element)
- return AE_BAD_PARAMETER;
+ if (!element) {
+ status = AE_BAD_DATA;
+ goto out;
+ }
if (element->type == ACPI_TYPE_PACKAGE) {
if ((element->package.count < 2) ||
(element->package.elements[0].type !=
ACPI_TYPE_LOCAL_REFERENCE)
- || (element->package.elements[1].type != ACPI_TYPE_INTEGER))
- return AE_BAD_DATA;
- device->wakeup.gpe_device =
+ || (element->package.elements[1].type != ACPI_TYPE_INTEGER)) {
+ status = AE_BAD_DATA;
+ goto out;
+ }
+ wakeup->gpe_device =
element->package.elements[0].reference.handle;
- device->wakeup.gpe_number =
+ wakeup->gpe_number =
(u32) element->package.elements[1].integer.value;
} else if (element->type == ACPI_TYPE_INTEGER) {
- device->wakeup.gpe_number = element->integer.value;
- } else
- return AE_BAD_DATA;
+ wakeup->gpe_device = NULL;
+ wakeup->gpe_number = element->integer.value;
+ } else {
+ status = AE_BAD_DATA;
+ goto out;
+ }
element = &(package->package.elements[1]);
if (element->type != ACPI_TYPE_INTEGER) {
- return AE_BAD_DATA;
+ status = AE_BAD_DATA;
+ goto out;
}
- device->wakeup.sleep_state = element->integer.value;
+ wakeup->sleep_state = element->integer.value;
if ((package->package.count - 2) > ACPI_MAX_HANDLES) {
- return AE_NO_MEMORY;
+ status = AE_NO_MEMORY;
+ goto out;
}
- device->wakeup.resources.count = package->package.count - 2;
- for (i = 0; i < device->wakeup.resources.count; i++) {
+ wakeup->resources.count = package->package.count - 2;
+ for (i = 0; i < wakeup->resources.count; i++) {
element = &(package->package.elements[i + 2]);
- if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
- return AE_BAD_DATA;
+ if (element->type != ACPI_TYPE_LOCAL_REFERENCE) {
+ status = AE_BAD_DATA;
+ goto out;
+ }
- device->wakeup.resources.handles[i] = element->reference.handle;
+ wakeup->resources.handles[i] = element->reference.handle;
}
- return AE_OK;
+ acpi_setup_gpe_for_wake(handle, wakeup->gpe_device, wakeup->gpe_number);
+
+ out:
+ kfree(buffer.pointer);
+
+ return status;
}
-static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
+static void acpi_bus_set_run_wake_flags(struct acpi_device *device)
{
- acpi_status status = 0;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *package = NULL;
- int psw_error;
-
struct acpi_device_id button_device_ids[] = {
{"PNP0C0D", 0},
{"PNP0C0C", 0},
{"PNP0C0E", 0},
{"", 0},
};
+ acpi_status status;
+ acpi_event_status event_status;
- /* _PRW */
- status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW"));
- goto end;
+ device->wakeup.flags.notifier_present = 0;
+
+ /* Power button, Lid switch always enable wakeup */
+ if (!acpi_match_device_ids(device, button_device_ids)) {
+ device->wakeup.flags.run_wake = 1;
+ device_set_wakeup_capable(&device->dev, true);
+ return;
}
- package = (union acpi_object *)buffer.pointer;
- status = acpi_bus_extract_wakeup_device_power_package(device, package);
+ status = acpi_get_gpe_status(device->wakeup.gpe_device,
+ device->wakeup.gpe_number,
+ &event_status);
+ if (status == AE_OK)
+ device->wakeup.flags.run_wake =
+ !!(event_status & ACPI_EVENT_FLAG_HANDLE);
+}
+
+static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
+{
+ acpi_handle temp;
+ acpi_status status = 0;
+ int psw_error;
+
+ /* Presence of _PRW indicates wake capable */
+ status = acpi_get_handle(device->handle, "_PRW", &temp);
+ if (ACPI_FAILURE(status))
+ return;
+
+ status = acpi_bus_extract_wakeup_device_power_package(device->handle,
+ &device->wakeup);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package"));
- goto end;
+ return;
}
- kfree(buffer.pointer);
-
device->wakeup.flags.valid = 1;
device->wakeup.prepare_count = 0;
+ acpi_bus_set_run_wake_flags(device);
/* Call _PSW/_DSW object to disable its ability to wake the sleeping
* system for the ACPI device with the _PRW object.
* The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
if (psw_error)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"error in _DSW or _PSW evaluation\n"));
-
- /* Power button, Lid switch always enable wakeup */
- if (!acpi_match_device_ids(device, button_device_ids))
- device->wakeup.flags.run_wake = 1;
-
-end:
- if (ACPI_FAILURE(status))
- device->flags.wake_capable = 0;
- return 0;
}
+static void acpi_bus_add_power_resource(acpi_handle handle);
+
static int acpi_bus_get_power_flags(struct acpi_device *device)
{
acpi_status status = 0;
/*
* Enumerate supported power management states
*/
- for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) {
+ for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3_HOT; i++) {
struct acpi_device_power_state *ps = &device->power.states[i];
char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
acpi_evaluate_reference(device->handle, object_name, NULL,
&ps->resources);
if (ps->resources.count) {
+ int j;
+
device->power.flags.power_resources = 1;
- ps->flags.valid = 1;
+ for (j = 0; j < ps->resources.count; j++)
+ acpi_bus_add_power_resource(ps->resources.handles[j]);
}
/* Evaluate "_PSx" to see if we can do explicit sets */
object_name[2] = 'S';
status = acpi_get_handle(device->handle, object_name, &handle);
- if (ACPI_SUCCESS(status)) {
+ if (ACPI_SUCCESS(status))
ps->flags.explicit_set = 1;
- ps->flags.valid = 1;
- }
- /* State is valid if we have some power control */
- if (ps->resources.count || ps->flags.explicit_set)
+ /*
+ * State is valid if there are means to put the device into it.
+ * D3hot is only valid if _PR3 present.
+ */
+ if (ps->resources.count ||
+ (ps->flags.explicit_set && i < ACPI_STATE_D3_HOT))
ps->flags.valid = 1;
ps->power = -1; /* Unknown - driver assigned */
device->power.states[ACPI_STATE_D3].flags.valid = 1;
device->power.states[ACPI_STATE_D3].power = 0;
- /* TBD: System wake support and resource requirements. */
+ /* Set D3cold's explicit_set flag if _PS3 exists. */
+ if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set)
+ device->power.states[ACPI_STATE_D3_COLD].flags.explicit_set = 1;
- device->power.state = ACPI_STATE_UNKNOWN;
- acpi_bus_get_power(device->handle, &(device->power.state));
+ acpi_bus_init_power(device);
return 0;
}
if (ACPI_SUCCESS(status))
device->flags.dynamic_status = 1;
- /* Presence of _CID indicates 'compatible_ids' */
- status = acpi_get_handle(device->handle, "_CID", &temp);
- if (ACPI_SUCCESS(status))
- device->flags.compatible_ids = 1;
-
/* Presence of _RMV indicates 'removable' */
status = acpi_get_handle(device->handle, "_RMV", &temp);
if (ACPI_SUCCESS(status))
if (ACPI_SUCCESS(status))
device->flags.lockable = 1;
+ /* Power resources cannot be power manageable. */
+ if (device->device_type == ACPI_BUS_TYPE_POWER)
+ return 0;
+
/* Presence of _PS0|_PR0 indicates 'power manageable' */
status = acpi_get_handle(device->handle, "_PS0", &temp);
if (ACPI_FAILURE(status))
if (ACPI_SUCCESS(status))
device->flags.power_manageable = 1;
- /* Presence of _PRW indicates wake capable */
- status = acpi_get_handle(device->handle, "_PRW", &temp);
- if (ACPI_SUCCESS(status))
- device->flags.wake_capable = 1;
-
/* TBD: Performance management */
return 0;
return acpi_get_handle(device->handle, "_DCK", &tmp);
}
-static struct acpica_device_id_list*
-acpi_add_cid(
- struct acpi_device_info *info,
- struct acpica_device_id *new_cid)
+const char *acpi_device_hid(struct acpi_device *device)
{
- struct acpica_device_id_list *cid;
- char *next_id_string;
- acpi_size cid_length;
- acpi_size new_cid_length;
- u32 i;
+ struct acpi_hardware_id *hid;
+ if (list_empty(&device->pnp.ids))
+ return dummy_hid;
- /* Allocate new CID list with room for the new CID */
-
- if (!new_cid)
- new_cid_length = info->compatible_id_list.list_size;
- else if (info->compatible_id_list.list_size)
- new_cid_length = info->compatible_id_list.list_size +
- new_cid->length + sizeof(struct acpica_device_id);
- else
- new_cid_length = sizeof(struct acpica_device_id_list) + new_cid->length;
-
- cid = ACPI_ALLOCATE_ZEROED(new_cid_length);
- if (!cid) {
- return NULL;
- }
+ hid = list_first_entry(&device->pnp.ids, struct acpi_hardware_id, list);
+ return hid->id;
+}
+EXPORT_SYMBOL(acpi_device_hid);
- cid->list_size = new_cid_length;
- cid->count = info->compatible_id_list.count;
- if (new_cid)
- cid->count++;
- next_id_string = (char *) cid->ids + (cid->count * sizeof(struct acpica_device_id));
+static void acpi_add_id(struct acpi_device *device, const char *dev_id)
+{
+ struct acpi_hardware_id *id;
- /* Copy all existing CIDs */
+ id = kmalloc(sizeof(*id), GFP_KERNEL);
+ if (!id)
+ return;
- for (i = 0; i < info->compatible_id_list.count; i++) {
- cid_length = info->compatible_id_list.ids[i].length;
- cid->ids[i].string = next_id_string;
- cid->ids[i].length = cid_length;
+ id->id = kstrdup(dev_id, GFP_KERNEL);
+ if (!id->id) {
+ kfree(id);
+ return;
+ }
- ACPI_MEMCPY(next_id_string, info->compatible_id_list.ids[i].string,
- cid_length);
+ list_add_tail(&id->list, &device->pnp.ids);
+}
- next_id_string += cid_length;
- }
+/*
+ * Old IBM workstations have a DSDT bug wherein the SMBus object
+ * lacks the SMBUS01 HID and the methods do not have the necessary "_"
+ * prefix. Work around this.
+ */
+static int acpi_ibm_smbus_match(struct acpi_device *device)
+{
+ acpi_handle h_dummy;
+ struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
+ int result;
- /* Append the new CID */
+ if (!dmi_name_in_vendors("IBM"))
+ return -ENODEV;
- if (new_cid) {
- cid->ids[i].string = next_id_string;
- cid->ids[i].length = new_cid->length;
+ /* Look for SMBS object */
+ result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path);
+ if (result)
+ return result;
- ACPI_MEMCPY(next_id_string, new_cid->string, new_cid->length);
+ if (strcmp("SMBS", path.pointer)) {
+ result = -ENODEV;
+ goto out;
}
- return cid;
+ /* Does it have the necessary (but misnamed) methods? */
+ result = -ENODEV;
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy)))
+ result = 0;
+out:
+ kfree(path.pointer);
+ return result;
}
static void acpi_device_set_id(struct acpi_device *device)
{
- struct acpi_device_info *info = NULL;
- char *hid = NULL;
- char *uid = NULL;
- struct acpica_device_id_list *cid_list = NULL;
- char *cid_add = NULL;
acpi_status status;
+ struct acpi_device_info *info;
+ struct acpica_device_id_list *cid_list;
+ int i;
switch (device->device_type) {
case ACPI_BUS_TYPE_DEVICE:
if (ACPI_IS_ROOT_DEVICE(device)) {
- hid = ACPI_SYSTEM_HID;
- break;
- } else if (ACPI_IS_ROOT_DEVICE(device->parent)) {
- /* \_SB_, the only root-level namespace device */
- hid = ACPI_BUS_HID;
- strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
- strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
+ acpi_add_id(device, ACPI_SYSTEM_HID);
break;
}
}
if (info->valid & ACPI_VALID_HID)
- hid = info->hardware_id.string;
- if (info->valid & ACPI_VALID_UID)
- uid = info->unique_id.string;
- if (info->valid & ACPI_VALID_CID)
+ acpi_add_id(device, info->hardware_id.string);
+ if (info->valid & ACPI_VALID_CID) {
cid_list = &info->compatible_id_list;
+ for (i = 0; i < cid_list->count; i++)
+ acpi_add_id(device, cid_list->ids[i].string);
+ }
+#ifdef CONFIG_PCI_GUESTDEV
+ if (info->valid & ACPI_VALID_UID)
+ device->pnp.unique_id = kstrdup(info->unique_id.string,
+ GFP_KERNEL);
+#endif
if (info->valid & ACPI_VALID_ADR) {
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
}
- /* If we have a video/bay/dock device, add our selfdefined
- HID to the CID list. Like that the video/bay/dock drivers
- will get autoloaded and the device might still match
- against another driver.
- */
+ kfree(info);
+
+ /*
+ * Some devices don't reliably have _HIDs & _CIDs, so add
+ * synthetic HIDs to make sure drivers can find them.
+ */
if (acpi_is_video_device(device))
- cid_add = ACPI_VIDEO_HID;
+ acpi_add_id(device, ACPI_VIDEO_HID);
else if (ACPI_SUCCESS(acpi_bay_match(device)))
- cid_add = ACPI_BAY_HID;
+ acpi_add_id(device, ACPI_BAY_HID);
else if (ACPI_SUCCESS(acpi_dock_match(device)))
- cid_add = ACPI_DOCK_HID;
+ acpi_add_id(device, ACPI_DOCK_HID);
+ else if (!acpi_ibm_smbus_match(device))
+ acpi_add_id(device, ACPI_SMBUS_IBM_HID);
+ else if (!acpi_device_hid(device) &&
+ ACPI_IS_ROOT_DEVICE(device->parent)) {
+ acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
+ strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
+ strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
+ }
break;
case ACPI_BUS_TYPE_POWER:
- hid = ACPI_POWER_HID;
+ acpi_add_id(device, ACPI_POWER_HID);
break;
case ACPI_BUS_TYPE_PROCESSOR:
- hid = ACPI_PROCESSOR_OBJECT_HID;
+ acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID);
break;
case ACPI_BUS_TYPE_THERMAL:
- hid = ACPI_THERMAL_HID;
+ acpi_add_id(device, ACPI_THERMAL_HID);
break;
case ACPI_BUS_TYPE_POWER_BUTTON:
- hid = ACPI_BUTTON_HID_POWERF;
+ acpi_add_id(device, ACPI_BUTTON_HID_POWERF);
break;
case ACPI_BUS_TYPE_SLEEP_BUTTON:
- hid = ACPI_BUTTON_HID_SLEEPF;
+ acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF);
break;
}
-
- if (hid) {
- device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1);
- if (device->pnp.hardware_id) {
- strcpy(device->pnp.hardware_id, hid);
- device->flags.hardware_id = 1;
- }
- }
- if (!device->flags.hardware_id)
- device->pnp.hardware_id = "";
-
- if (uid) {
- device->pnp.unique_id = ACPI_ALLOCATE_ZEROED(strlen (uid) + 1);
- if (device->pnp.unique_id) {
- strcpy(device->pnp.unique_id, uid);
- device->flags.unique_id = 1;
- }
- }
- if (!device->flags.unique_id)
- device->pnp.unique_id = "";
-
- if (cid_list || cid_add) {
- struct acpica_device_id_list *list;
-
- if (cid_add) {
- struct acpica_device_id cid;
- cid.length = strlen (cid_add) + 1;
- cid.string = cid_add;
-
- list = acpi_add_cid(info, &cid);
- } else {
- list = acpi_add_cid(info, NULL);
- }
-
- if (list) {
- device->pnp.cid_list = list;
- if (cid_add)
- device->flags.compatible_ids = 1;
- }
- }
-
- kfree(info);
}
static int acpi_device_set_context(struct acpi_device *device)
return -ENOMEM;
}
+ INIT_LIST_HEAD(&device->pnp.ids);
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
* -----------------
* TBD: Synch with Core's enumeration/initialization process.
*/
-
- /*
- * Hardware ID, Unique ID, & Bus Address
- * -------------------------------------
- */
acpi_device_set_id(device);
/*
* Wakeup device management
*-----------------------
*/
- if (device->flags.wake_capable) {
- result = acpi_bus_get_wakeup_device_flags(device);
- if (result)
- goto end;
- }
+ acpi_bus_get_wakeup_device_flags(device);
/*
* Performance Management
#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
+static void acpi_bus_add_power_resource(acpi_handle handle)
+{
+ struct acpi_bus_ops ops = {
+ .acpi_op_add = 1,
+ .acpi_op_start = 1,
+ };
+ struct acpi_device *device = NULL;
+
+ acpi_bus_get_device(handle, &device);
+ if (!device)
+ acpi_add_single_object(&device, handle, ACPI_BUS_TYPE_POWER,
+ ACPI_STA_DEFAULT, &ops);
+}
+
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
unsigned long long *sta)
{
return AE_OK;
if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
- !(sta & ACPI_STA_DEVICE_FUNCTIONING))
+ !(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
+ struct acpi_device_wakeup wakeup;
+ acpi_handle temp;
+
+ status = acpi_get_handle(handle, "_PRW", &temp);
+ if (ACPI_SUCCESS(status))
+ acpi_bus_extract_wakeup_device_power_package(handle,
+ &wakeup);
return AE_CTRL_DEPTH;
+ }
/*
* We may already have an acpi_device from a previous enumeration. If
struct acpi_device **child)
{
acpi_status status;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
void *device = NULL;
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
- printk(KERN_INFO PREFIX "Enumerating devices from [%s]\n",
- (char *) buffer.pointer);
-
status = acpi_bus_check_add(handle, 0, ops, &device);
if (ACPI_SUCCESS(status))
acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
- acpi_bus_check_add, ops, &device);
+ acpi_bus_check_add, NULL, ops, &device);
if (child)
*child = device;
- return 0;
+
+ if (device)
+ return 0;
+ else
+ return -ENODEV;
}
+/*
+ * acpi_bus_add and acpi_bus_start
+ *
+ * scan a given ACPI tree and (probably recently hot-plugged)
+ * create and add or starts found devices.
+ *
+ * If no devices were found -ENODEV is returned which does not
+ * mean that this is a real error, there just have been no suitable
+ * ACPI objects in the table trunk from which the kernel could create
+ * a device and add/start an appropriate driver.
+ */
+
int
acpi_bus_add(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type)
memset(&ops, 0, sizeof(ops));
ops.acpi_op_add = 1;
- acpi_bus_scan(handle, &ops, child);
- return 0;
+ return acpi_bus_scan(handle, &ops, child);
}
EXPORT_SYMBOL(acpi_bus_add);
int acpi_bus_start(struct acpi_device *device)
{
struct acpi_bus_ops ops;
+ int result;
+
+ if (!device)
+ return -EINVAL;
memset(&ops, 0, sizeof(ops));
ops.acpi_op_start = 1;
- acpi_bus_scan(device->handle, &ops, NULL);
- return 0;
+ result = acpi_bus_scan(device->handle, &ops, NULL);
+
+ acpi_update_all_gpes();
+
+ return result;
}
EXPORT_SYMBOL(acpi_bus_start);
printk(KERN_ERR PREFIX "Could not register bus type\n");
}
+ acpi_power_init();
+
/*
* Enumerate devices in the ACPI namespace.
*/
if (result)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
+ else
+ acpi_update_all_gpes();
return result;
}
projects / linux-flexiantxendom0-3.2.10.git / blobdiff